/**************总容器***************/
.wrapper{
    width: 100%;
    height: 100%;
}

/**************main***************/
.wrapper .main{
    flex-grow: 1;
    padding-bottom: 12vw;
    overflow: hidden;

    background-image: url(../img/bg_element.png);
    background-repeat: repeat;
    z-index: -1000;
    user-select: none;
}
